LINC-ROR and cancer: The lncRNA ROR serves as a sponge of several miRNA sequences, including miR‐145, miR‐205 and the let‐7 family, in regulating the differentiation of embryonic stem cells47 and the proliferation, migration and invasion of cancer cells.48, 49 The reciprocal repression mechanism between ROR and miR‐133 was found in hypertrophic cardiomyocytes.